Optics/mount : 12″ACF 2.7m AP-Reduzer Alt-5 Camera/filters: Atik 11002 AstrodonHa/OIII Exposure:36×600 Ha / OIII all 2bin 04 septembre 2016 The Helix Nebula, also known as The Helix, NGC 7293, is a large planetary nebula (PN) located in the constellation Aquarius. Discovered by Karl Ludwig Harding, probably before 1824, this object […]
